Common Planner vs Lessonly

Common Planner is a web-based collaborative lesson planner for teachers, schools, and districts. Teachers can create lesson and unit plans, organize classes, and reuse planbooks and lessons across school years. They can search for standards, attach them to units, and track which standards have been taught. Shared planbooks support co-planning, sharing plans with administrators, and borrowing plans from other teachers. School leaders can review planning status, standards coverage, and pacing, then comment on lesson plans. The school product page describes AI-assisted insights for identifying missing standards, pacing issues, or instructional gaps. Basic for Teachers includes an AI-powered lesson assistant, daily, weekly, and monthly planning, up to 50 Google Classroom posts, and file uploads from a computer or supported storage services. Pro includes unlimited Classroom posts, unit planning, automatic standards tracking, and up to five collaborators. The Basic plan is free forever; Pro is listed at $5.59 a month, with a one-payment amount of 71.88 USD. The Schools plan includes school-wide templates, membership management, staff training, and ongoing support. There is no app, but the service works through a browser on tablets and smartphones.

Lessonly is a web-based AI lesson-planning platform for teachers and educators in the United Kingdom. Its AI generates curriculum-aligned lesson plans with differentiated content for different key stages. A dashboard supports class groups, student profiles and schedule organization, while teaching guides, progress tracking and a lesson-plan library support ongoing teaching work. The intended users include teachers, tutors, early career teachers and trainees. Listed capabilities include standards alignment, collaboration and AI lesson generation; mobile access is web-only. The free-forever plan costs nothing and does not require a credit card. Lessonly says prompts and generated content are not used to train AI models, though AI providers may retain submitted data for up to 30 days for abuse monitoring and safety. Account data remains while an account is active and for 30 days after deletion; user content is deleted within 30 days of account deletion. The service is not guaranteed to be continuously available or uninterrupted.